[Commits] [wesnoth/wesnoth] 2b12dd: travis: Enable ccache support

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/wesnoth/wesnoth
  Commit: 2b12dd8e427d5ea4b1b720086637c1134d4dea89
      https://github.com/wesnoth/wesnoth/commit/2b12dd8e427d5ea4b1b720086637c1134d4dea89
  Author: Ignacio R. Morelle <shadowm at wesnoth.org>
  Date:   2016-10-16 (Sun, 16 Oct 2016)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  travis: Enable ccache support

This should halve build times in the best case, and only seems to expose
one GCC warning-related issue that will be addressed by the next commit.
Actual build times will continue to vary wildly based on the kind of
changes people push and the build's I/O-bound nature triggering the
limitations inherent to shared hosting services.


  Commit: 07492073ccd8b24f22b92fac4d4906fb334d4a36
      https://github.com/wesnoth/wesnoth/commit/07492073ccd8b24f22b92fac4d4906fb334d4a36
  Author: Ignacio R. Morelle <shadowm at wesnoth.org>
  Date:   2016-10-16 (Sun, 16 Oct 2016)

  Changed paths:
    M src/campaign_server/campaign_server.cpp

  Log Message:
  -----------
  campaignd: Ignore old-style-cast warning caused by a system macro on GCC

Somehow only happens with the Travis GCC configuration we use as of this
writing when using ccache.


Compare: https://github.com/wesnoth/wesnoth/compare/a8136a2b4287...07492073ccd8